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The following code allows you to block specific user agents or referrers from being tracked with the Tracking add-on. It was written for a very specific use case in mind but can still serve you as a basis to implement your own, custom filter.

add_filter( 'advanced-ads-tracking-do-tracking', 'my_advads_tracking_filter', 10, 3 ); function my_advads_tracking_filter( $status, $ad_id, $table ) { // possible harmful user agents, can be partial $blocked_user_agents = array( 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538', 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538', ); // possible harmful referrers $blocked_referrers = array( 'example.com', ); // only check clicks, use 'impressions' for impressions // or remove the condition to check clicks and impressions if( $table && strpos( $table, 'clicks' ) ) { $block_user_agent = false; $block_referrer = false; // check user agent if (isset($_SERVER['HTTP_USER_AGENT']) && '' !== $_SERVER['HTTP_USER_AGENT']) { $agent = sanitize_text_field(wp_unslash($_SERVER['HTTP_USER_AGENT'])); foreach( $blocked_user_agents as $_agent ) { // stop after the first matching user agent we found if( false !== strpos( $agent, $_agent ) ) { $block_user_agent = true; break; } } } // check referrer if (isset($_SERVER['HTTP_REFERER']) && '' !== $_SERVER['HTTP_REFERER']) { $referrer = sanitize_text_field(wp_unslash($_SERVER['HTTP_REFERER'])); foreach( $blocked_referrers as $_referrer ) { // stop after the first matching user agent we found if( false !== strpos( $referrer, $_referrer ) ) { $block_referrer = true; break; } } } // only block the click if we found a blocked user agent AND referrer if( $block_user_agent && $block_referrer ){ return false; } } return $status; }